How to find processor 32 bit or 64 bit

Some time you may need to know what bit your processor uses, for installing the packages.

Here is the way you can use to find the information.

getconf LONG_BIT

uname -m

(x86_64 GNU/Linux indicates you have 64bit CPU. If you use see i386/i486/i586/i686 then it is a 32 bit CPU.)